String Tension Tester

The STT lets you know when it’s time to restring. Measures relative tension loss of strings over time. Modern ergonomic design is easy to operate with one hand. Larger scale, quickly gives readings with more accuracy than competitive testers.

No Reviews Yet

Write a Review

Photo of island of GAMMA Sports headquarters, offices

About GAMMA

GAMMA Sports is a family-owned business with a 40-year history of developing innovative products that advance racquet sports for players of all levels.

GAMMA Innovation

GAMMA has been combining science with sport since day one. Our commitment to  research and development has helped us create some of the top racquet sports equipment on the market. 

Incredible technology and materials

GAMMA Innovation